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Operation
Using an 71000 Series Spectrum Analyzer
Frequency Tracking Calibration
Use this procedure to align the frequency of the 11974 tracking filter to the tuned
frequency of the spectrum analyzer. Follow this procedure whenever the 11974 is
connected to a different spectrum analyzer. Periodically check the calibration.
1. Set the 11974 rear-panel switches
70910A) and
LEDS
to properly scale the tune ramp of the spectrum analyzer.
2. When the 71000 is set up with multiple active input ports available, configure the
analyzer for a preselected external mixer by using the following key sequence:
MENU
State
select input
IN "n" EM "Model Number"
NOTE
If the State key is not available when you press MENU, skip configuration
step
2.
3. Select the frequency band of operation by using the following key sequence:
State
ext mixer
fulband KAQUVE
Press the softkey for the appropriate frequency band. (
to the default active input, see
4. Initialize the preselector-peak DAC to the center of its range by pressing
,
pre-select
PRESEL DAC
5. Set the analyzer to zero span by pressing
NOTE
Due to the repetitive nature of this procedure, it may be helpful to save the
center-frequency settings in unused state registers after performing
and
step
1. "Model Number" will be either 70907A, 70909A, or 70910A; "n" is a number indicating the order in
which the input devices were found by the input device search.
64
70907B
to the ON position, and the other two switches to the OFF position,
1
INSTR PRESET
, and 128, then terminate the entry with the
c.
with an 70907B, 70909A, or 70910A
(this switch also applies to the 70909 and
INSTR PRESET
on page 68.)
and
and entering 0 Hz.
Freq
SPAN
will reset this
State,
softkey.
ENTER
step a
Chapter 3
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